It bothers me that just forward of the severed frame rails, the only thing that keep the floorpan from folding is the depth of the center tunnel. Have you considered a stress bar from the top of each rail to the firewall?

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It bothers me that just forward of the severed frame rails, the only thing that keep the floorpan from folding is the depth of the center tunnel. Have you considered a stress bar from the top of each rail to the firewall?

Yes, those are the few more supports I have to attach. The cab needs to be mounted to get the right measurements. I plan on connecting the firewall to frame and cab.